Is it possible to install a custom ROM to my Redmi Note 9?

[LR7875]

I found a tool called MediatekBootloaderUnlock. With that I was able to unlock the Bootloader and now I have flashed the phone. Of course I got to the same point where I need the MI account.

Is there any step by step instructions to install the custom ROM?

You first need to have TWRP installed.

To do this read my instructions
1. go into fastboot, put your TWRP.img and vbmeta.img into c drive not under any folder
2. execute

fastboot --disable-verity --disable-verification flash vbmeta C:\vbmeta.img

3. execute

fastboot flash recovery C:\TWRP.img

Downloads:

For TWRP.img

TWRP-3.4.2b CN (wszx150) for merlin(Redmi Note 9/Redmi 10X 4G) [UNOFFICIAL]

TWRP Unofficial for Redmi Note 9/Redmi 10X 4G This build only supports Chinese and English. This is one of wszx150's TWRP builds. And that's it,enjoy ;) This is an unofficial build and we cannot guarantee that this build can be used normally on...

forum.xda-developers.com

For vbmeta.img
first download this

Xiaomi Firmware Updater

The ultimate script that provides firmware packages for Xiaomi devices.

xiaomifirmwareupdater.com

Choose the type “Fastboot” to download
then extract it and find the vbmeta.img under the “images” folder

 

[LR7875]

After done this, you should be in TWRP.
1. swipe to allow modifications
2. wipe date, then factory reset
3. connect phone to pc, download and transfer this rom to your phone

[ROM][11] [OFFICIAL] PixelPlusUI for Redmi Note 9 (merlin, merlinnfc)

* Your warranty is now void. * We are not responsible for anything that may happen to your phone by installing any custom ROMs and/or kernels. * You do it at your own risk and take the responsibility upon yourself and you are not to blame us or...

forum.xda-developers.com

4. install, then select your rom zip
5. swipe to flash
6. reboot, uncheck both “install twrp app” and “install twrp app as system app”
7. wish you good luck

 

[ARHG]

Thanks for the help. I am downloading what you told me and I will go through the process step by step according to your instructions.

 

[ARHG]

I´m trying to execute this command: fastboot --disable-verity --disable-verification flash vbmeta C:\vbmeta.img, but I'm getting this error message: fastboot: unknown option -- disable-verity. Can you help me?

 

[ARHG]

I managed to get the command to work. You are already installing the ROM. I'll tell you later how it goes.

 

[ARHG]

Hi. My Note 9 is working now. No more MI account troubles. Thank you for all your support.

I am testing my phone with the new custom ROM and everything is fine. Some slight lag when scrolling through google news or youtube, but none of that is a big deal. The only thing I didn't like was the camera app. The shutter is too slow and I can't set the pixel resolution when taking pictures. It also doesn't give me many configuration options in video. In general, it does not allow much configuration. I have already tried with Google Cam, GCam, Cam Go and ANXCamera, but in general they have the same limitations. It doesn't make sense that the phone has 4 sensors and they can't be used. Is there an application for the camera that allows me to have more control over the configuration and use the 4 sensors? Better if it is a free app.

 

[LR7875]

Hi. My Note 9 is working now. No more MI account troubles. Thank you for all your support.

I am testing my phone with the new custom ROM and everything is fine. Some slight lag when scrolling through google news or youtube, but none of that is a big deal. The only thing I didn't like was the camera app. The shutter is too slow and I can't set the pixel resolution when taking pictures. It also doesn't give me many configuration options in video. In general, it does not allow much configuration. I have already tried with Google Cam, GCam, Cam Go and ANXCamera, but in general they have the same limitations. It doesn't make sense that the phone has 4 sensors and they can't be used. Is there an application for the camera that allows me to have more control over the configuration and use the 4 sensors? Better if it is a free app.

Hi! Glad you got your phone working.

Maybe try this xiaomi camera port? But it is a little bit old, so I am not sure will it work now.

[PORT]MIUI Camera Universal Port

Xiaomi began to sell its first Android One phone Mi A1, it has original AOSP official ROM,but with a MIUI Camera.This means Xiaomi has ported the MIUI Cam to AOSP ROM,and this enables us to extract and port MIUI camera to any devices on any...

forum.xda-developers.com

(Yeah, I don’t think using this port now is a good idea given it’s age. It most likely will not support a high resolution.)

There are other more recent camera apps ports you can try, like this oneplus camera port:

OnePlus Apps Port

OnePlus Apps Ported or Modded

www.pling.com

I am 99.9 percent sure that they still have the same problem, but that’s what I found sorry

 

[ARHG]

I finally managed to install ANX Camera on my Redmi Note 9. At the moment it is working fine. And I consider that a little better than GCam. Of course I am not an expert in photography and I am just venturing into the Custom ROMS, so it may be that my perception of ANX Camera is not the most objective and expert. But it works and it is supposed that with ANX Camera I can use the 4 sensors and the 48 mpx.

 

[LR7875]

I finally managed to install ANX Camera on my Redmi Note 9. At the moment it is working fine. And I consider that a little better than GCam. Of course I am not an expert in photography and I am just venturing into the Custom ROMS, so it may be that my perception of ANX Camera is not the most objective and expert. But it works and it is supposed that with ANX Camera I can use the 4 sensors and the 48 mpx.

Glad you found a good one! I am not suprised by that as ANX camera is meant to based on miui camera so it should be more optimised for xiaomi phones.

 

[Manjotbenipal]

Link Twrp and Orange fox for Merlin
https://androidfilehost.com/?w=files&flid=318242

hi there, hope you can solve a little query.
I wanted to know that which version of shrp should i install?
I'm currently on miui12.0.1 android 10.
can i install any version of shrp or i have to search for an appropriate one?

 

[NOSS8]

hi there, hope you can solve a little query.
I wanted to know that which version of shrp should i install?
I'm currently on miui12.0.1 android 10.
can i install any version of shrp or i have to search for an appropriate one?

O.F is R11
look at here:https://forum.xda-developers.com/t/...for-merlin-redmi-note-9-redmi-10x-4g.4227751/